Magmas known as kimberlites have the deepest origins of all magmas on Earth. ❋ James Gerken (2012)
Diamonds are formed under high pressure at least 150km within the earth's mantle, and are brought to the surface by volcanic eruptions in rocks called kimberlites, named after ❋ Unknown (2010)
Eventually, volcanic rocks known as kimberlites are propelled to the surface during rapid eruptions, bringing the gems up to the surface. ❋ Unknown (2009)
X-ray diffraction, and quantitative electron microprobe analysis of diamond indicator minerals, 'kimberlites', ore minerals and process metallurgical products (ores, concentrates, leach residues, etc.). ❋ [email protected](davisonandasso (2009)
Most are found in kimberlites, which are pipe-like formations created as a result of volcanic and tectonic activity. ❋ Unknown (2007)
As diamonds in the Ekati kimberlites are only present at 1/5 of a gram per tonne, the geologist used more prolific diamond indicator minerals, like G-10 garnets and chrome minerals to point the way to diamondiferous pipes. ❋ Unknown (2003)
"The country has more than a thousand kimberlites," or rocks which could contain diamonds, he said. ❋ Unknown (2004)
"Much of the area covered by the Orapa and Jwaneng prospecting licences has never been fully explored using modern geophysical exploration techniques, and is considered to be highly prospective for the discovery of new diamondiferous kimberlites," the companies said. ❋ Unknown (2004)
In terms of the agreements, De Beers will finance and carry out all exploration and evaluation work on kimberlites discovered in the project area. ❋ Unknown (2004)
"The large A37 anomaly not only differs from the known kimberlites in terms of its large size, but appears to represent a focus of kimberlite activity with multiple feeders, which is typical of many of the world's economic pipes," Tsodilo said. ❋ Unknown (2003)
Discoveries have mostly been in south-western Zimbabwe where there is a cluster of kimberlites lying in the extension of the ❋ Unknown (1997)
Beers has been awarded the exclusive rights to prospect for diamonds in new kimberlites in the north east to the country including parts of the provinces of Lunda Norte and Lunda Sul. ❋ Unknown (1996)
In the north east to the country including parts of the provinces of Lunda Norte and Lunda Sul, the company has prospecting rights for diamonds in new kimberlites. ❋ Unknown (1996)
In two other areas, Quel (Malanje province) and Mavinga (Cuando Cubango province) the company has prospecting rights for diamonds, in both alluvials, and in kimberlites. ❋ Unknown (1996)
The company also obtained prospecting rights for diamonds in both alluvials and kimberlites for Quel (Malanje province) and ❋ Unknown (1996)
"There are known kimberlites in Angola but there are none that have so far been found to be commercially viable." ❋ Unknown (1993)
Kennady North hosts four known diamondiferous kimberlites and a number of unexplained kimberlite mineral indicators.
The Gahcho Kué Project consists of a cluster of four diamondiferous kimberlites, three of which have a probable mineral reserve of 31.3 million tonnes grading 1.57 carats per tonne for total diamond content of 49 million carats.
We are hopeful that additional kimberlites will be identified at both the Gahcho Kué Project and the Kennady North Diamond Project.
Yo did you see [hunter] hit the [kimberlite pipe] off of [Bridgette]? ❋ Bamf29 (2016)
